code: def __del__(self):
      self.lock.acquire()
      self.meteor_p.stdin.close()
      self.meteor_p.kill()
      self.meteor_p.wait()
      self.lock.release()
  
file_path: graph4nlp/graph4nlp/pytorch/modules/evaluation/meteor_tool/meteor.py
imports: import os
  import subprocess
  import threading
label_desc: Use image node_id 6 for calling the Meteor obj's underlying member method code with example usage: obj.__del__() without return types